Description: Platinum resistance temperature sensing probe for real time wash tank water temperature measurement, feeding signals to PLC / temperature controllers for heater thermostatic regulation.
Measures real time water temperature of pre wash, main wash and rinse tanks in continuous spray washing machines, transmitting temperature signals to PLC or temperature controller units. It governs heater on off cycles to hold target wash water temperature for stable process performance and prevent thermal over temperature. Probes make direct contact with hot wash water and acid alkali detergent solutions.
Protective sheath: Food grade 304 / 316L stainless steel (316L for chloride rich aggressive chemical environments). Sensing core element: PT100 platinum resistance sensor. Cabling: Waterproof heat resistant signal cable.
1. PT100 Platinum Resistance Sensor (Primary Selection): High accuracy and stable reading performance for hot water spray washer circuits.
2. Mounting styles: Threaded mount version; sanitary tri clamp quick release version (simple removal for CIP cleaning).
3. Construction variants: One piece integrated assembly; replaceable insert type with protective outer sheath.
1. Signal Drift & Measurement Inaccuracy: Mineral scale and protein fouling deposits build up on sheath outer walls impeding thermal transfer into sensing core.
2. Sheath Corrosion Perforation: Hot acid alkali / chloride containing detergents induce pitting corrosion on 304 sheaths; process liquid ingress destroys internal sensing components.
3. Cable Sheath Rupture & Water Ingress Short Circuit: Humid hot operating environment, repeated tensile pulling and thermal aging crack outer cable insulation producing short circuit or signal dropout faults.
4. Probe Sheath Mechanical Bending Fracture: Hydraulic impact, hard object blows or excessive mechanical force during disassembly bend and rupture protective sheaths.
1. Per Shift Inspection: Check temperature controller display readings for stability and absence of erratic temperature jumping; visually inspect probe sheath scaling build up.
2. Periodic Cleaning: Remove probes; use soft brushes to clean scale and protein fouling off sheath surfaces. Soak stubborn mineral scale with food grade citric acid solution. Never scrape sheath surfaces with hard implements.
3. Calibration Schedule: Quarterly accuracy verification against reference standard thermometer.
4. Mechanical Protection: Shield probes from hard object impact; secure cabling to avoid tensile pull damage.
5. Replacement Criteria: Replace complete probe assembly upon sheath perforation / corrosion, cable rupture or persistent un correctable temperature reading drift.
PT100 temperature probes serve as thermostatic control sensing elements for spray washing machines providing real time tank water temperature feedback to implement closed loop temperature regulation. Periodic descaling and mechanical protection for sheath and cabling guarantee measurement fidelity. Replace probes promptly for sheath corrosion or cable damage.
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